Current Direct: A Transition Effort in Europe

Tom Ewing

The European Union is underwriting a project, called Current Direct, to facilitate and hasten the transition to battery powered commercial maritime vessels. It's funded by the European Union’s Horizon 2020 research and innovation program. It also has 13 private sector partners, including Blackstone Resources, Spear Power Systems and Wärtsilä. It has a quick timeline; a demonstration project should be ready by 2023.

New thinking and innovation run across every aspect of this project, from the batteries to a loading and replacement system to recycling.

One goal is to develop multiple novel battery production technologies. Blackstone Resources will be developing a novel 3D printed cell manufacturing process which enables thicker electrodes to increase cell level energy density. An advanced composite material being developed by the University of Brussels will reduce pack level costs and increase energy density. Spear Power Systems and Wärtsilä are developing the final "battery pack," a fully integrated package based on a standard 20-foot shipping container, maximizing energy and performance.

"Energy as service" is the central project idea. This includes development of strategically located battery swapping stations at port locations. An e-vessel needing new power would dock at a such a station. Then, instead of plugging into a charger, a crane would remove a spent battery pack and replace it with one fully charged. Each pack will be about the size of a 20-foot shipping container. The vessel, repowered, would move back into the workstream. That re-power timing goal is five minutes.

The planned 2023 demonstration project will be at the Port of Rotterdam. The modular built E-Pusher vessel, currently in use as a transport barge, will be the demonstration vessel. Again, to meet a five minute challenge.

Bigger picture, EU authorities believe this project will have payoffs in many areas, from energy to GHG reductions to triggering new investments in innovation and employment in the European marine transport and battery energy storage sectors.

Marine News Magazine, page 31,  Mar 2022

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